# this file is part of refractiveindex.info database
# refractiveindex.info database is in the public domain
# copyright and related rights waived via CC0 1.0

REFERENCES: |
    D. R. Smith and E. V. Loewenstein.
    Optical constants of far infrared materials. 3: plastics.
    <a href="https://doi.org/10.1364/AO.14.001335"><i>Appl. Opt.</i> <b>14</b>, 1335-1341 (1975)</a>
COMMENTS: |
    Polyimide manufactured by DuPont under the name Kapton.
DATA:
  - type: tabulated n
    data: |
        28.5714 1.754
        28.9855 1.751
        29.4118 1.748
        29.8507 1.746
        30.3030 1.745
        30.7692 1.742
        31.2500 1.743
        31.7460 1.740
        32.2581 1.739
        32.7869 1.736
        33.3333 1.734
        33.8983 1.733
        34.4828 1.730
        35.0877 1.728
        35.7143 1.723
        36.3636 1.716
        37.0370 1.712
        37.7358 1.721
        38.4615 1.733
        39.2157 1.745
        40.0000 1.758
        40.8163 1.758
        41.6667 1.749
        42.5532 1.743
        43.4783 1.737
        44.4444 1.723
        45.4545 1.729
        46.5116 1.726
        47.6190 1.725
        48.7805 1.726
        50.0000 1.730
        51.2821 1.730
        52.6316 1.726
        54.0541 1.723
        55.5556 1.716
        57.1429 1.709
        58.8235 1.723
        60.6061 1.738
        62.5000 1.755
        64.5161 1.792
        66.6667 1.793
        68.9655 1.808
        71.4286 1.820
        74.0741 1.811
        76.9231 1.815
        80.0000 1.805
        83.3333 1.806
        86.9565 1.804
        90.9091 1.805
        95.2381 1.808
        100.0000 1.804
        105.2632 1.806
        111.1111 1.797
        117.6471 1.793
        125.0000 1.787
        133.3333 1.785
        142.8571 1.784
        153.8462 1.781
        166.6667 1.770
        181.8182 1.769
  - type: tabulated k
    data: |
        28.5714 0.00910
        28.9855 0.00980
        29.4118 0.0114
        29.8507 0.0115
        30.3030 0.0129
        30.7692 0.0134
        31.2500 0.0122
        31.7460 0.0107
        32.2581 0.0101
        32.7869 0.00994
        33.3333 0.0105
        33.8983 0.0120
        34.4828 0.0140
        35.0877 0.0161
        35.7143 0.0186
        36.3636 0.0247
        37.0370 0.03357
        37.7358 0.03784
        38.4615 0.1139
        39.2157 0.04865
        40.0000 0.0306
        40.8163 0.0260
        41.6667 0.0219
        42.5532 0.0201
        43.4783 0.0209
        44.4444 0.0217
        45.4545 0.0255
        46.5116 0.0270
        47.6190 0.0337
        48.7805 0.03967
        50.0000 0.04074
        51.2821 0.0386
        52.6316 0.0408
        54.0541 0.0419
        55.5556 0.04523
        57.1429 0.05830
        58.8235 0.09460
        60.6061 0.1227
        62.5000 0.1092
        64.5161 0.08784
        66.6667 0.08143
        68.9655 0.08029
        71.4286 0.06184
        74.0741 0.0500
        76.9231 0.0437
        80.0000 0.0376
        83.3333 0.0342
        86.9565 0.0341
        90.9091 0.0305
        95.2381 0.0244
        100.0000 0.0186
        105.2632 0.0134
        111.1111 0.0084
        117.6471 0.0078
        125.0000 0.0095
        133.3333 0.0083
        142.8571 0.0085
        153.8462 0.0092
        166.6667 0.0041